Walker with adjustable handlebar

Abstract

A walker including a main frame with a main part with a telescopic frame member being slidably adjustable in relation to main part, a handle bar with a brake handle bar for activating a brake via a brake pull wire, a brake wire connected to a brake wire fastener and brake, and a brake tensioner plate arranged in frame member. The brake tensioner plate includes upper, lower and brake tensioner sheaves, one of the brake tensioner sheaves being laterally displaceable and arranged for adjusting the running length of the brake wire, so that the brake wire may be tensioned and the brake activated, for displacement along the brake wire and for telescopic displacement of the frame member, so that tensioning of the brake wire may occur independently from the vertical position of the brake tensioner plate.

1. A walker with a brake, comprising:
 a main frame with a telescopic frame member running generally in a vertical direction in the main frame, a height of the telescopic frame member is adjustable in relation to a main portion of the walker; 
 a handle bar mounted to the telescopic frame member, wherein the handle bar together with a brake handle is arranged to activate the brake via a brake bar; 
 a brake wire, wherein a first end of the brake wire is attached to an upper brake wire fastener on an upper portion of the main frame and wherein a second end of the brake wire is connected to the brake; and 
 a brake tensioner plate arranged in a lower portion of the telescopic frame member and below the upper brake wire fastener, the brake tensioner plate comprising an upper sheave and a lower sheave for the brake wire, and a tensioner sheave arranged between the upper and the lower sheaves in which the tensioner sheave is displaceable, the tensioner sheave being arranged for adjusting a running length of the brake wire between the upper and the lower sheaves so that the brake wire may be tensioned to activate the brake, 
 wherein the brake tensioner plate is arranged to be slideable along the brake wire and arranged to be movable together with the telescopic frame member so that the tensioning of the brake wire occurs independently of the vertical position of the brake tensioner plate. 
 
   
   
     2. The walker according to  claim 1 , wherein the tensioner plate further comprises a brake tensioner arm and a torque arm connected to the brake tensioner arm, wherein the tensioner sheave rests on the brake tensioner arm being rotatable about a pivotal axis centered on the upper sheave, and in which the brake tensioner arm is provided with the torque arm which forms a first angle in relation to the brake tensioner arm and forms a second angle in relation to the brake bar, so that when the brake bar is tensioned, the force on the torque arm rotates the brake tensioner arm to move the tensioner sheave to cause the running length of the wire between the lower and upper sheaves to be extended, and vice versa. 
   
   
     3. The walker according to  claim 1 , wherein the brake wire runs from the upper brake wire fastener on the upper portion of the main frame to the brake via a lower frame sheave at a lower end of the main frame. 
   
   
     4. The walker according to  claim 1 , wherein the brake wire and the brake tensioner plate are arranged within the telescopic frame member. 
   
   
     5. The walker according to  claim 1 , wherein the brake wire and the brake tensioner plate are arranged within the telescopic frame member within the main frame. 
   
   
     6. The walker according to  claim 1 , wherein the brake tensioner plate constitutes a lower portion of the telescopic frame member. 
   
   
     7. The walker according to  claim 3 , wherein the brake wire runs from the lower frame sheave in the main frame via an upper frame sheave on a frame leg holding the brake which impacts at least one wheel on the frame leg. 
   
   
     8. The walker according to  claim 7 , wherein the frame leg is pivotally mounted in the main frame about a shaft which constitutes a rotation axis for the upper frame sheave. 
   
   
     9. The walker according to  claim 7 , wherein the brake impacts the at least one wheel on the frame leg and in which the at least one wheel is a rear wheel, and in which the frame leg is a rear frame leg and so that the rear wheel is located behind a vertical line beneath the handle bar and in which the rear wheel is not pivotable on a fork in relation to the main frame. 
   
   
     10. The walker according to  claim 9 , wherein a front wheel is arranged beneath the lower end of the main frame in a pivotable fork mounted on a generally horizontal beam on the lower part of the main frame, and in which a hinged bar leads from the rear portion of the horizontal beam and back to a lower portion of the rear frame leg. 
   
   
     11. The walker according to  claim 8 , wherein a rotational movement of a rear frame leg inwardly towards the main frame about the shaft which also holds the upper frame sheave is such that the brake wire runs a greater length about the upper frame sheave such that the brake is activated when the walker is in its folded position. 
   
   
     12. The walker according to  claim 1 , wherein right and left portions of the main frame are connected via a transversal horizontally directed beam, and in which a seat is arranged between the right and left portions of the main frame. 
   
   
     13. A walker comprising:
 a main frame; 
 a telescopic member slideably attached internal to the main frame; 
 a brake handle attached to a top portion of the telescopic member; 
 a frame leg pivotally attached external to the main frame on a pivot point adjacent to the main frame; 
 a brake attached on a lower end of the frame leg; 
 a brake wire, wherein a first end of the brake wire is fixedly attached to a brake fastener mounted on the main frame and a second end of the brake wire is connected to the brake; 
 a tensioner plate slideably connected internal to the main frame, wherein a position of the tensioner plate is fixed relative to a position of the telescopic member; and 
 a brake bar, wherein a first end of the brake bar is attached to the brake handle and a second end of the brake bar is attached to the tensioner plate, 
 wherein the brake wire runs from the brake fastener through the tensioner plate over an upper tensioner sheave on the tensioner plate, over a movable tensioner sheave on the tensioner plate, and over a lower tensioner sheave on the tensioner plate within the main frame and through the frame leg to the brake, and 
 wherein when the brake handle is activated, the tensioner plate is activated via a movement of the brake bar to cause a change in a length of the brake wire extending between the upper and the lower tensioner sheaves to thereby activate or deactivate the brake. 
 
   
   
     14. The walker of  claim 13 , further comprising:
 a lower frame sheave rotatably attached to a lower portion of the main frame such that the brake wire runs from the brake fastener, through the tensioner plate and then around the lower frame sheave, before being attached to the brake. 
 
   
   
     15. The walker of  claim 14 , further comprising:
 an upper frame sheave rotatably attached to an upper portion of the frame leg such that the brake wire runs around the lower frame sheave and then around the upper frame sheave before being attached to the brake. 
 
   
   
     16. The walker of  claim 13 , wherein the tensioner plate is slideable in relation to the brake wire. 
   
   
     17. The walker of  claim 13 , wherein when the brake handle is activated, the tension of the brake wire is increased to thereby cause a change in the running length of the brake wire within the frame leg. 
   
   
     18. The walker of  claim 13 , wherein the tensioner plate comprises:
 the upper tensioner sheave; 
 a tensioner arm pivotally attached to the upper tensioner sheave such that the tensioner arm pivots about a center of the upper tensioner sheave; 
 a torque arm fixedly attached to the tensioner arm and attached to the brake bar so that when the brake bar moves, the torque arm and the tensioner arm pivot about the center of the upper tensioner sheave; 
 the movable tensioner sheave attached to the tensioner arm such that the movable tensioner sheave also pivots about the center of the upper tensioner sheave as the tensioner arm moves; and 
 the lower tensioner sheave, 
 wherein the brake wire runs from the brake fastener in order around the upper tensioner sheave, around the movable tensioner sheave and around the lower tensioner sheave such that when the brake handle is activated to cause the brake bar to move, a length of the brake wire running through the tensioner plate is changed to thereby cause a corresponding opposite change in the length of the brake wire in the frame leg. 
 
   
   
     19. The walker of  claim 18 , wherein when the brake handle is activated, the length of the brake wire running through the tensioner plate is lengthened.